Explain how a resting potential is maintained across the axon membrane in a neurone.

Explain why the speed of transmission of impulses is faster along a myelinated axon than along a non-myelinated axon.

A scientist investigated the effect of inhibitors on neurones. She added a respiratory inhibitor to a neurone. The resting potential of the neurone changed from –70 mV to 0 mV.

Explain why.